What am i doing wrong with this chemical formula?

AI Thread Summary
The discussion focuses on correcting a chemical formula, specifically Pb(NO3)2, which was initially written incorrectly as PB(NO3)2. Participants highlight the importance of using the correct chemical symbols, noting that lead (Pb) differs from phosphorus-boron (PB). Additionally, there is clarification that KI is not a solid but exists in solution. The conversation emphasizes attention to detail in chemical notation and the state of compounds. Accurate chemical representation is crucial for proper understanding and communication in chemistry.
triplepie
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I think this chemical balance is correct but I'm not sure if I am writing it right or not. Any help?
 
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Perhaps it's not accepting your answer because of a small typo: PB(NO3)2 should be Pb(NO3)2. After all, lead (Pb) is not the same as a phosphorus-boron (PB) compound.
 
Oh my lol, I didn't notice that, thank you.
 
also, KI is not a solid, it's in solution
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
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